1221013322342 has 32 divisors (see below), whose sum is σ = 2124229950720. Its totient is φ = 520858829920.

The previous prime is 1221013322341. The next prime is 1221013322351. The reversal of 1221013322342 is 2432233101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221013322341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22737992 + ... + 22791627.

It is an arithmetic number, because the mean of its divisors is an integer number (66382185960).

Almost surely, 2^{1221013322342} is an apocalyptic number.

1221013322342 is a deficient number, since it is larger than the sum of its proper divisors (903216628378).

1221013322342 is a wasteful number, since it uses less digits than its factorization.

1221013322342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45529708.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1221013322342 its reverse (2432233101221), we get a palindrome (3653246423563).

It can be divided in two parts, 122101 and 3322342, that added together give a palindrome (3444443).

The spelling of 1221013322342 in words is "one trillion, two hundred twenty-one billion, thirteen million, three hundred twenty-two thousand, three hundred forty-two".